1'IB  R.AR.Y 

OF  THE 

UNIVERSITY 
OF    ILLINOIS 


G30.T 


cop 


.2, 


AGRICW.TURE 


NON  CIRCULATING 

CHECK  FOR  UNBOUND 
CIRCULATING  COPY 


UNIVERSITY  OF  ILLINOIS 

Agricultural  Experiment  Station 


BULLETIN  No.  305 


CROP  YIELDS   FROM   ILLINOIS   SOIL 
EXPERIMENT  FIELDS  IN  1927 

BY  F.  C.  BAUER 


URBANA,  ILLINOIS,  APRIL,  1928 


LOCATION  OF  THE  THIRTY-ONE  EXPERIMENT  FIELDS  FROM 
WHICH  DATA  ARE  PRESENTED  IN  THIS  BULLETIN 


CROP  YIELDS   FROM   ILLINOIS   SOIL 
EXPERIMENT  FIELDS  IN  1927 

By  F.  C.  BAUER,  Chief,  Soil  Experiment  Fields 

The  farm  lands  of  Illinois  are  made  up  of  many  soil  types  which 
vary  widely  in  productiveness  and  in  response  to  systems  of  soil  treat- 
ment. Frequently  marked  variations  in  these  respects  are  found  in 
the  same  community  between  neighboring  farms  and  even  on  the  same 
farm.  These  facts  are  well  known  to  all  farmers.  The  systems  of  soil 
treatment  that  may  be  employed  to  maintain  or  increase  the  pro- 
ductiveness of  different  soils  and  thereby  enable  the  farmer  to  produce 
his  crops  at  less  cost  and  increase  his  net  profits,  are  not,  however,  so 
well  understood.  This  is  a  matter  for  careful  investigation  under  field 
conditions. 

In  order  to  furnish  the  farmers  of  the  state  with  information  that 
would  be  helpful  to  them  in  planning  systems  of  soil  treatment  for 
their  own  farms,  the  Illinois  Agricultural  Experiment  Station  for  a 
number  of  years  has  conducted  field  investigations  in  all  sections  of 
the  state  on  extensive  soil  types,  varying  widely  in  productiveness,  to 
test  the  effectiveness  of  different  systems  of  soil  treatment  on  the  yield 
of  farm  crops.  Altho  some  investigations  along  this  line  had  been 
going  on  at  Urbana  since  1876,  the  first  of  the  outlying  soil  experiment 
fields  was  established  in  1901.  Some  of  the  original  fields  are  still  in 
operation.  In  all,  more  than  fifty  soil  experiment  fields  have  been 
established  in  Illinois.  Some  of  these  have  been  abandoned  at  one 
time  or  another  for  various  reasons.  During  the  crop  season  of  1927, 
thirty-one  of  these  fields  were  in  operation.  The  location  of  these  may 
be  ascertained  by  referring  to  the  accompanying  map. 

The  complete  results  from  all  the  Illinois  soil  experiment  fields  up 
to  and  including  1924  were  reported  in  Bulletin  273.  Subsequent  re- 
sults have  been  reported  in  Bulletins  280  and  296.  The  present  bulletin 
is  a  continuation  of  this  series  of  publications,  being  a  record  of  the 
yields  for  the  year  1927. 

In  these  publications  the  figures  are  presented  as  a  matter  of 
record,  without  comment  or  discussion.  In  a  broad  way,  of  course,  the 
results  speak  for  themselves  and  carry  certain  definite  lessons  to  those 
who  have  been  following  the  investigations  of  the  Station.  Discussions 
of  these  investigations  have  appeared  from  time  to  time  in  former 
station  publications,  and  further  discussions  of  an  interpretative  nature 
will  appear  in  future  publications. 

343 


344  BULLETIN  No.  305  [April, 

Explanation  of  Tables  and  Symbols 

The  results  reported  on  the  pages  following  are  for  the  individual 
fields  arranged  alphabetically  rather  than  by  location  or  by  soil  type. 
All  yields  except  those  in  parentheses  indicate  acre  yields  in  bushels. 
Yields  in  parentheses  indicate  acre  yields  in  tons. 

The  following  symbols  have  been  used  in  this  bulletin  to  denote 
the  soil  treatments  applied: 

0  =  No  treatment  rP  =  Rock  phosphate 

M  =  Manure  sP  =  Superphosphate  (acid  phosphate) 

R  =  Crop  residues1  bP  =  Bone  phosphate  (bone  meal) 

Le  =  Legume  catch  crop*  S  =  Flowers  of  sulfur 

L  =  Limestone  KC1  =  Muriate  of  potash 

K  =  Potash  (      )  =  Tons  of  hay 


JThe  crop  residues  are  chiefly  cornstalks  and  sweet  clover  plowed  down  as  a 
green  manure.  In  some  cases  the  second  crop  of  clover  and  other  legume  residues 
have  also  been  plowed  down. 

2Legumes  seeded  in  small  grain  to  be  plowed  down  the  following  year  for 
succeeding  crops. 


1928}        CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1927  345 

TABLE  1.— ALEDO  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Corn 

Series 
200 
Corn 

Series  300 

Series 
400 
Oats 

Wheat 

Stubble 
clover 

WEST 

HALF 

1 
2 
3 

4 

5 

6 

7 
8 

9 
10 

0.. 

49.2 

36.2 
53.6 
68.2 
65.8 

39.2 
42.4 
77.0 
79.0 

74.8 
31.8 

29.2 
37.0 
39.2 
38.3 

30.3 
30.5 
35.7 
35.0 

38.3 
30.8 

(1^25) 
(1.57) 

53.1 
67.5 
68.1 
67.2 

59.7 
53.4 
60.9 
59.1 

62.2 
56.6 

M  

58.2 

ML  

67.8 

MLrP  

69.6 

0.. 

41.0 

R  

45.0 

RL  

60.2 

RlrP  

64.0 

RLrPK  

65  4 

0  

35.6 

EAST 

HALF 

1 
2 
3 

4 

5 
6 

7 
8 

9 
10 

RL.  . 

44.4 

39.8 
55.6 
66.8 
65.8 

43.0 

46.8 
69.8 
78.6 

75.6 
51.8 

30.0 
40.5 
41.3 
40.3 

33.3 
36.2 
38.3 
38.3 

39.2 
32.7 

(   -75) 

(l'-20) 

(1-92) 
(1.20) 

50.6 
68.4 
68.8 
69.4 

56.9 
57.8 
59.4 
58.4 

60.9 
56.9 

MrP  

65  2 

MLbP  

68.0 

MLrP  

70.4 

RsP.  . 

41  2 

RrP  

46.0 

RLsP  

63.6 

RLrP  

65.8 

RLrPK.. 

69.8 

RLrP  

47.0 

Note. — In  1924  the  plots  on  these  series  were  divided  into  east  and  west  halves 
in  order  to  provide  for  additional  phosphorus  studies.  The  plots  on  the  west  halves 
of  all  series  continue  under  the  original  soil  treatment  but  the  plots  on  the  east  halves 
receive  the  treatment  designated  above.  No  more  rock  phosphate  will  be  applied 
to  the  phosphate  plots  on  the  west  halves  for  an  indefinite  period,  these  plots  having 
received  a  total  of  8,000  pounds  an  acre. 

On  the  east  halves  all  phosphorus  fertilizers  will  be  applied  twice  in  the  rota- 
tion, ahead  of  the  wheat  crop  and  the  first  corn  crop,  at  the  following  annual  acre 
rates:  rock  phosphate  500  pounds,  superphosphate  200  pounds,  bone  meal  200 
pounds.  The  minimum  amount  of  limestone  necessary  for  the  successful  growth 
of  the  clover  green-manure  crop  will  be  applied  to  Plots  1-E  and  10-E,  4,000  pounds 
an  acre  having  been  applied  in  1924. 


TABLE  2.— ALEDO  FIELD:     MINOR  SERIES 


Serial 

„!„* 

Series  500 

Series  600 

plot 
No. 

Soil  treatment 

Corn 

Soil  treatment 

Corn 

1 

R 

33  9 

R.  . 

.  37.2 

2 

RbP 

..  .  63.2 

RsP.  . 

.  ..  54.8 

3 

RLbP. 

.  .  .  71.3 

RLsp. 

.  ..  67.0 

4 

RL.. 

.  58.5 

RL.. 

.  60.8 

BULLETIN  No.  305  [April, 


TABLE  2. — Continued 


Serial 

Series  700 

Series  800 

plot 
No. 

Soil  treatment 

Corn 

Soil  treatment 

Corn 

1 

R.  . 

.  .  .  39.9 

R.  .  . 

.  42  2 

2 

RrP  

.  ..  61.8 

R,  sla 

gP.. 

.  .  .  60.7 

3 

RLrP 

67  8 

RL,  s 

lag  P  

.  .  .  73  1 

4 

RL  

.  .  .  63  .0 

RL.. 

.  .  .  60.4 

TABLE  3— ANTIOCH  FIELD:    SERIES  100 


Plot 
No. 

Soil  treatment 

Corn 

Plot 
No. 

Soil  treatment 

Corn 

1 

o 

9  4 

6 

LRbP.  .  . 

.  .   17  2 

2 

LrP 

16  2 

7 

LRK  

.  .   16  0 

3 

LRrP  

..    19.4 

8 

LKbP  

..   15.6 

4 

LbP  

.  .  17.4 

9 

LRKbP  

.  .  24.0 

5 

LKrP  

.  .   14.4 

10 

RKbP  

..  26.6 

Note. — At  Antioch,  beginning  with  1924,  rock  phosphate  has  been  applied  to 
Plots  2,  3  and  5  at  the  annual  acre  rate  of  500  pounds;  one-half  of  the  rotation  appli- 
cation is  made  ahead  of  the  oats  crop  and  one-half  ahead  of  the  wheat  crop.  The 
soil  treatment  remains  unchanged  on  the  other  plots. 


TABLE  4.— BLOOMINGTON  FIELD:     SERIES  100 


Plot 

North  Half 

South  Half 

No. 

Soil  treatment 

Corn 

Soil  treatment 

Corn 

1 

R.  . 

.  49.8 

0  .  . 

.  ..  41.0 

2 

RLbP  

.  .  .  58  6 

RL  

.  .  .  46  0 

3 

RLrP  

.  ..  63.6 

RLsP  

.  ..  67.6 

4 

RLbP  

.  .  .  60.0 

RLbP  

..  .  63.6 

5 

RLKrP.. 

.  61.4 

RLKsP.. 

.  69.4 

6  RLbP 60 .8  RLbP 64 .2 

7  RLKrP 66.4  RLKsP 74.8 

8  RLKbP 67.4  RLKbP 69.4 

9  RLKbP 75.8  RLKbP 77.8 

10  RKbP 56.6  RKbP 60.6 

11  RrP 61.8  RsP 63.0 

Note. — At  Bloomington  in  1924  an  additional  plot  was  laid  out  at  the  east  end 
of  the  series.  All  plots  were  divided  into  north  and  south  halves  and  the  soil  treat- 
ment planned  as  follows:  Residues  (cornstalks,  the  second  crop  of  red  clover,  legume 
green-manure  crops)  to  be  turned  under  on  all  plots  except  Plot  1-S.  Different 
phosphorus  carriers  to  be  applied  at  the  following  acre  rates  per  rotation:  bone 
meal,  1,000  pounds,  to  Plots  2-N,  4-N,  6-N,  8-N,  9-N  and  10-N;  rock  phosphate, 
2,500  pounds,  to  Plots  3-N,  5-N,  7-N,  and  11-N;  superphosphate,  1,000  pounds, 
to  Plots  3-S,  5-S,  7-S,  and  11-S.  Two-fifths  of  the  rotation  application  of  these 
phosphates  is  to  be  made  ahead  of  the  oats  crop,  two-fifths  ahead  of  the  wheat  crop, 
and  one-fifth  ahead  of  the  first  corn  crop. 


1928}        CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1927 


347 


TABLE  5. — CARLINVILLE  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Clover- 
alfalfa 

Series        Series 
200            300 
Corn          Oats 

Series 
400 
Wheat 

1 

0                           

(2.00) 

34.8          11.7 

20.4 

2 

M  

(1.99) 

52.9          14.7 

25.8 

3 

ML  

(4.21) 

56.7          21.6 

27.4 

4 

MLrP  

.    (4.58) 

56.5          21.1 

27.8 

5 

0    . 

.    (1.79) 

30.8          17.3 

19.0 

6 

R                        

(   .92) 

29.7          13.8 

21.8 

7 

RL  

(3.23) 

32.5          16.7 

25.1 

8 

RLrP  

.    (3.20) 

38.9          17.0 

25.1 

9 

RLrPK  

,    (3.50) 

62.2          17.0 

28.4 

10 

0   

.    (1.85) 

39.9          16.7 

19.9 

TABLE  6.—  CARLINVILLE 

FIELD: 

MINOK  SERIES 

Serial 
plot 
No. 

Soil  treatment1 

Series 
700 
Corn 

Series 
800 
Corn 

1 

LeL  (250)  

36.8 

33.2 

2 

LeL  (1000)  

39.0 

32.2 

3 

LeL  (500)  

40.2 

51.4 

4 

LeL  (500  )  ,  treble  superphosphate  .  , 

40.0 

50.8 

5 

LeL  (500),  superphosphate  

45.0 

48.4 

6 

LeL  (500  )  ,  rock  phosphate  

40.2 

47.2 

7 

L  (500)  

30.6 

26.8 

figures  in  parentheses  refer  to  the  annual  pound  rate  per  acre  at  which 
limestone  is  applied.  Series  700  has  now  received  two  applications  of  limestone, 
each  of  which  was  four  times  the  annual  rate;  and  Series  800  has  received  one  appli- 
cation, which  was  twenty  times  the  figure  indicated  as  the  annual  rate. 


TABLE  7.— CARTHAGE  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 

Series  200 

Series 

Series 
400 
Oats 

100 
Corn1 

Wheat 

Stubble- 
clover 

300 
Clover 

1 

2 
3 
4 

5 
6 

7 
8 

9 
10 

0.  . 

31.9 

19.6 
24.7 
27.5 
30.6 

20.2 
24.6 
29.6 
31.7 

36.4 
19.5 

(".36) 
(1.21) 
(1.59) 

(1.93) 

(2.21) 
(2.98) 
(3.34) 
(3-41) 

(2.3D 

(1.88) 
(2.09) 
(2.37) 

(2.46) 
(2.08) 

25.8 
31.3 
37.3 
47.7 

28.9 
24.8 
30.8 
31.9 

35.3 
29.4 

M  

...  45.9 

ML  

46.9 

MLrP  

59.7 

0.. 

.  34.5 

R  

39.8 

RL  

...  .  49.0 

RLrP  

58.6 

RLrPK... 

.  67.7 

0  

44.3 

the  spring. 


was  a  thin  stand  on  Plots  3,  5,  and  6  as  a  result  of  water-logged  soil  in 


348  BULLETIN  No.  305  [April, 

TABLE  8.— CARTHAGE  FIELD:     MINOR  SERIES 


Series  500 

Series  600 

Series  700 

Serial 
plot 
No. 

Soil  treatment1 

Oats 

Stubble 
clover 

West2 

Corn 

Corn 

West2 

East2 

West2 

East2 

1 

2 
3 
4 
5 
6 
7 
8 

RL.  . 

25 
31 
32 
31 
33 
35 
32 
31 

.0 
.3 
.8 
.9 
.1 
.9 
.8 
.3 

(.92) 
(-91) 
(.86) 
(.86) 
(.81) 
(.86) 
(-81) 
(.83) 

32.0 
38.2 
35.7 
38.7 
32.4 
25.0 
32.3 
33.7 

36.9 
40.8 
40.8 
41.2 
38.2 
34.5 
33.5 
38.5 

37.1 
28.0 
43.8 
31.9 
28.0 
41.7 
32.1 
41.2 

37.1 
32.5 
35.7 
27.3 
24.0 
41.7 
36.9 
38.8 

RLrP 
RLrP 
RLrP 
RLrP 
RLrP 
RLrP 
RL.  . 

(100)  

(100),  gypsum 
(200)  

(100) 

(200),  gypsum 
(400)  

(200) 

(400),  gypsum 

(400) 

1The  figures  in  parentheses  indicate  the  annual  acre  rates  (pounds)  at  which 
rock  phosphate  and  gypsum  are  applied. 

2The  fall  growth  of  sweet  clover  is  regularly  removed  from  the  west  halves  of 
the  series  and  the  corn  following  is  harvested  by  half  plots. 

TABLE  9.— CLAYTON  FIELD 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Corn 

Series  200 

Series 
300 
Clover 

Series 
400 
Oats 

Wheat 

Stubble 
clover 

1 
2 
3 
4 

5 
6 

7 
8 

9 
10 

0.  . 

.  39.8 

13.0 
19.0 
23.3 
25.2 

15.2 
15.4 
20.4 
22.9 

26.7 
14.6 

(".29) 
(1.18) 
(1  .40) 

(1.50) 

(1.54) 
(2.70) 
(2.57) 
(2.92) 

(1.71) 
(1.48) 
(1.70) 
(1.77) 

(2.20) 
(1.69) 

20.2 
27.8 
32.3 
31.3 

22.8 
23.1 
29.7 
32.0 

33.6 
25.0 

M  

48.6 

ML  

51.6 

MLrP  

47.4 

0.. 

.  31.4 

R  

44.6 

RL  

56.4 

RLrP  

58.8 

RLrPK  

...  63.0 

0  

44.4 

(See  opposite  page  for  Table  10.) 
TABLE  11.— DIXON  FIELD:     MINOR  SERIES 


Serial                                                                       Series  Series  Series  Series 

plot                      Soil  treatment                            500  600  700  800 

No.                                                                      Oat  hay1  Corn  Oats  Corn2 

1-N  K..                                                         .    (1.10)  21.4  44.4  35.2 

1-S  0  ................................    (1.09)  16.6  42.8  40.8 

2-N  MK..                                                   .    (1.00)  32.0  53.1  47.4 

2-S  M  ...............................    (1.06)  38.0  54.7  45.8 

3-N  MLK..                                                   .    (1.59)  45.0  60.6  49.2 

3-S  ML  .............................    (1.59)  49.0  65.6  34.0 

4-N  MLrPK..                                             .    (1.57)  40.8  59.7  54.0 

4-S  MLrP  ...........................    (1.66)  48.2  65.6  37.6 


crop  for  alfalfa.     2Heavy  rains  late  in  May  weakened  the  stand  on 
803-S  and  804-S. 


1928}        CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1927  349 


TABLE  10.— DIXON  FIELD:     MAIN  SERIES 


Serial                                                                    Series  Series  Series  Series 

plot                        Soil  treatment                          100            200  300  400 

No.                                                                          Corn  Wheat  Clover  Oats 

SOUTH  HALF 


1 

0  

35.4 

21.2 

(1.59) 

38.4 

2 

M  

51.6 

23.3 

(2.46) 

58.8 

3 

ML  

60.6 

22.2 

(2.71) 

55.6 

4 

MLrP  

61.4 

25.5 

(2.88) 

55.9 

5 

0.. 

32.2 

17.3 

(1.92) 

40.3 

6 

R  

38.8 

17.8 

(1-28) 

41.6 

7 

RL  

54.6 

20.7 

(1.97) 

45.0 

8 

RLrP  

55.2 

22.3 

(2.04) 

49.4 

9 

RLrPK... 

61.6 

24.3 

(2.48) 

50.0 

10 

0  

28.8 

16.5 

(1.10) 

34.4 

NORTH  HALF 


1  RL 28.2  16.8  (.78)  38.8 

2  MrP 56.8  26.2  (2.72)  57.2 

3  MLbP 63.2  26.7  (2.80)  55.9 

4  MLrP 56.8  26.0  (2.88)  54.7 

5  RsP 36.0  23.7  (1.91)  44.1 

6  RrP 41.6  22.8  (1.96)  42.8 

7  RLsP 53.8  24.8  (2.41)  48.1 

8  RLrP 53.6  23.8  (2.07)  45.9 

9  RLrPK,  gypsum...  60.8  26.8         (2.61)         50.0 
10        RLrP 34.2          18.2         (1.57)        40.0 

Note. — In  1924  the  plots  on  these  series  were  divided  into  north  and  south  halves, 
and  some  additional  investigations  were  begun.  The  plots  on  the  south  halves 
of  all  series  continue  under  the  original  soil  treatment,  but  the  plots  on  the  north 
halves  receive  the  treatment  designated  above.  No  more  rock  phosphate  will  be 
applied  to  the  phosphate  plots  on  the  south  halves  for  an  indefinite  period,  these 
having  received  a  total  of  8,000  pounds  an  acre.  The  same  holds  true  for  the  north 
half  of  Plot  9  of  all  series. 

On  the  north  halves  the  phosphatic  fertilizers  and  gypsum  are  applied  twice 
in  the  rotation,  one-half  of  the  rotation  quota  ahead  of  wheat,  and  one-half  ahead 
of  corn,  at  the  following  annual  acre  rates:  rock  phosphate  500  pounds,  super- 
phosphate 200  pounds,  bone  meal  200  pounds,  gypsum  200  pounds. 

The  minimum  amount  of  limestone  necessary  for  the  successful  growth  of 
clovers  will  be  applied  to  Plots  1-N  and  10-N  on  all  series,  4,000  pounds  an  acre 
having  been  applied  in  1924. 


350 


BULLETIN  No.  305 


[April, 


TABLE  12.— ELIZABETHTOWN:     MAIN  SERIES 


Serial1 
plot 
No. 

Soil  treatment 

Series 
100 
Wheat 

Series 
200 
Timothy- 
sw.  clover 

Series 
300 
Wheat 

Series 
400 
Corn 

Series 
500 
Wheat 

1 

0.. 

2.3 

(0.00) 

2.5 

29.8 

1.7 

2 

M  

....     2.6 

(0.00) 

1.9 

37.2 

2.0 

3 

ML  

6.2 

(1.45) 

9.2 

46.2 

5.3 

4 

MLrP  

8.2 

(2.18) 

9.4 

43.7 

4.5 

5 

0.. 

....     2.2 

(0.00) 

.4 

24.7 

1.5 

6 

R  

1.0 

(0.00) 

.7 

28.3 

1.3 

7 

RL  

3.8 

(1.21) 

5.2 

40.9 

4.2 

8 

RLrP  

.  ...  .     6.6 

(2.18) 

5.1 

49.1 

5.0 

9 

RLrPK... 

...     6.2 

(3.15) 

6.7 

49.3 

.5.8 

10 

0  

3.3 

(0.00) 

1.2 

14.8 

1.2 

'Plot  1  on  Series  100,  300,  and  400  and  Plot  10  on  Series  100  and  200  lie  on 
lower  ground  and  are  naturally  more  productive. 


TABLE  13.— ELIZABETHTOWN:     MINOR  SERIES 


Soil  treatment 

Plot  A 
Wheat 

PlotB 
Corn 

PlotC 
Soybeans 

RLsP. 

11.7 
6.2 

53.6 
52.6 

(2.00) 
(1.92) 

RLrP. 

TABLE  14.—  ENFIELD 

FIELD 

:    MAIN 

SERIES 

Serial 
plot 
No. 

Soil  treatment 

Series 

Series  200 

Series 
300 
Sw.  clover- 
alfalfa 

Series 
400 
Soybeans1 

100 
Corn 

Wheat 

Stubble 
clover 

1 
2 
3 

4 

5 
6 

7 
8 

9 
10 

0.. 

6.9 

3.2 
7.5 

17.8 
25.5 

4.8 
5.2 
12.9 
20.2 

23.5 

5.8 

(6  '.66) 
(0.00) 
(0.00) 

(1.39) 

(0.00) 
(0.00) 
(2.38) 
(2.62) 

(0.00) 
(0.00) 

(   -81) 
(   -78) 

(1.34) 
(0.00) 

3.5 
6.5 
19.6 
18.2 

4.8 
4.7 
14.6 
14.7 

19.8 
6.5 

M  

.     20.2 

ML  

.     36.3 

MLrP  

.     32.4 

0.. 

4.3 

R  

6.4 

RL  

.     15.2 

RLrP  

.     13.4 

RLrPK.  . 

.     26.0 

0  

4.5 

Substitute  for  oats. 


1928} 


CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1927 


351 


TABLE  15.— ENFIELD  FIELD:     MINOR  SERIES 


Serial 
plot 
No. 

Soil  treatment1 

Series 
700 
Corn 

Series 
800 
Wheat 

1-W 

L.  .. 

11.4 

.7 

1-E 

L  

11.0 

2.0 

2-W 

LrP  (2000)  sP(100),  sweet  clover  

17.6 

1.3 

2-E 

LrP  (2000)  sP  (100),  red  clover  

9.5 

4.7 

3-W 

LrP  (2000),  sweet  clover  

16.0 

2.3 

3-E 

LrP  (2000),  red  clover  

11.0 

5.7 

4-W 

LrP  (1000)  sP  (200),  sweet  clover  

18.2 

2.7 

4-E 

LrP  (1000)  sP(200),  red  clover  

14.4 

6.7 

5-W 

LrP  (1000),  sweet  clover  

13.6 

4.0 

5-E 

LrP  (1000),  red  clover  , 

12.4 

7.0 

6-W 

L,  sweet  clover  

7.2 

3.0 

6-E 

L,  red  clover  

8.5 

4.0 

1The  figures  in  parentheses  indicate  the  total  applications  of  phosphate  per  acre 
excepting  that  Plots  804  and  805  received  an  additional  application  of  1,000  pounds 
of  rock  phosphate  per  acre  for  the  1927  wheat  crop. 


TABLE  16.— EWING  FIELD:     MAIN  SERIES 


Serial 
plot 

No. 

Soil  treatment 

Series 
100 
Corn 

Series 
200 
Wheat 

Series 
300 
Soybeans 

Series 
400 
Soybeans1 

1 

0  .  . 

5  8 

1.8 

(    .41) 

.7 

2 

M.... 

24  6 

4  5 

(   .63) 

2.0 

3 

ML  

63  0 

18  2 

(1.65) 

11.3 

4 

MLrP  

..     58.6 

23.6 

(1.60) 

12.7 

5 

0.. 

2  4 

3  0 

(    49) 

2.7 

6 

R  

1.1 

2.8 

(   .48) 

2.0 

7 

RL  

5.4 

17.2 

(1.01) 

10.7 

8 

RLrP  

50 

20  7 

(1.22) 

12.7 

9 

RLrPK... 

..     52.3 

27.7 

(1.48) 

14.7 

10 

0  

6  2 

4  1 

(   .60) 

1.4 

'Soybeans  grown  as  a  substitute  for  oats. 


352  BULLETIN  No.  305  [April, 


TABLE  17.— EWING  FIELD:     MINOR  SERIES1 


Serial 

Series 

Series 

Series 

plot 

Soil  treatment                          500N 

500S 

600 

No. 

Soybeans2 

Corn 

Wheat 

1 

MLrPK,  no  clover        .                            (36) 

4  3 

10  4 

2 

MLrPK,  white  biennial  sweet  clover     (  .  32  ) 

4.9 

19.0 

3 

MLrPK,  red  clover  (  .32) 

3.7 

21  9 

4 

MLrPK,  hubam  clover  (  .29) 

2.3 

22  4 

5 

MLrPK,  alsike  clover  (  .29) 

5  6 

23  0 

6 

MLrPK,yellow  biennial  sweet  clover     (  .  29  ) 

3.9 

23.0 

1  These  series  were  replotted  from  what  were  formerly  Plots  A  and  B.  Prior  to 
1917  fertilizers  had  been  applied  as  follows:  manure  8  tons,  limestone  8  tons,  rock 
phosphate  6,000  pounds,  and  kainit  2,400  pounds  per  acre.  With  the  exception  of 
limestone  used  when  necessary  to  grow  the  clovers,  no  more  fertilizing  materials 
will  be  added.  A  study  will  be  made  of  relative  value  of  different  clovers  as  the  source 
of  organic  manure  in  a  rotation  of  corn,  oats,  and  wheat  (clover  catch  crop). 

2Soybeans  grown  as  a  substitute  for  oats. 


TABLE  18.— EWING  FIELD:     MINOR  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
700 
Soybeans1 

Series 
800 
Wheat 

Series 
900 
Corn 

1 

Le  

(.44) 

3.3 

3.6 

2 

LeL.  . 

(.47) 

4.7 

9.0 

3 

LeLsP  (100)  

(.58) 

15.0 

12.5 

4 

LeLrP  (200)  

(.61) 

10.7 

12.0 

5 

LeL  '  

(.56) 

5.7 

5.1 

6 

LeLsP  (200)  

(.70) 

12.7 

10.3 

7 

LeLrP  (400)  

(.72) 

10.0 

15.5 

Soybeans  grown  as  a  substitute  for  oats. 


1928] 


CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1927 


353 


TABLE  19.— HARTSBURG  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Corn 

Series 
200 
Corn 

Series  300 

Series 
400 

Wheat 

Stubble 
clover 

WEST 

HALF 

1 
2 
3 
4 

5 
6 

7 
8 

9 
10 

0  .  . 

60.8 

48.0 
59.0 
71.2 

72.2 

60.0 
71.8 
69.6 

77.2 

71.2 

55.8 

16.7 
21.7 
22.3 
23.5 

20.0 
20.8 
19.3 
22.7 

20.0 
23.0 

("•85) 
(   -75) 
(   -90) 

(1.00) 

37.5 

38.4 
48.4 
46.9 

37.5 
44.4 
42.2 
37.5 

41.3 
41.9 

M  

..     65.6 

ML  

..     67.0 

MLrP  

..     72.8 

0  

..     60.0 

R  

..     60.2 

RL  

..     65.2 

RLrP  

..     69.6 

RLrPK  

65.2 

0  

..     56.6 

EAST 

HALF 

1 
2 
3 
4 

5 
6 

7 
8 

9 
10 

RL.  . 

58.8 

73.4 
61.6 
71.0 
69.2 

79.6 

78.8 
81.0 
78.8 

73.4 

70.4 

15.5 
23.8 
23.8 
25.0 

18.7 
23.3 
22.5 
21.7 

22.3 
17.8 

(   -95) 

(1.00) 
(1.00) 
(   -55) 
(   .90) 

(   -95) 
(   -85) 

32.5 
45.3 
46.9 

48.8 

37.2 

47.8 
43.1 
41.9 

41.3 

40.3 

MrP  

..     64.8 

MLbP  

..     69.0 

MLrP  

..     72.4 

RsP.  . 

.  .     59  8 

RrP  

63  2 

RLsP  .... 

69  4 

RLrP  

..     68.4 

RLrPK,  gypsum  

67.8 

RLrP  

..     63.6 

Note. — In  1924  the  plots  on  these  series  were  divided  into  west  and  east  halves 
and  additional  investigations  were  begun.  The  plots  on  the  west  halves  of  all  series 
continue  under  the  original  soil  treatment  but  the  plots  on  the  east  halves  receive 
the  treatment  designated  above.  No  more  rock  phosphate  will  be  applied  to  the 
phosphate  plots  on  the  west  halves  for  an  indefinite  period,  these  plots  having  re- 
ceived a  total  of  8,000  pounds  an  acre.  The  same  holds  true  for  the  east  half  of 
Plot  9  on  all  series. 

On  the  east  halves  the  phosphatic  fertilizers  and  gypsum  are  applied  twice  in 
the  rotation,  one-half  ahead  of  the  wheat  crop  and  one-half  ahead  of  the  first  corn 
crop,  at  the  following  annual  acre  rates :  rock  phosphate  500  pounds,  superphosphate 
200  pounds,  bone  meal  200  pounds,  gypsum  200  pounds. 

The  minimum  amount  of  limestone  necessary  to  secure  successful  growth  of 
the  legume  catch  crop  will  be  applied  to  Plots  1-E  and  10-E  on  all  series,  4,000  pounds 
an  acre  having  been  applied  in  1924. 


TABLE  20.— HARTSBURG  FIELD:     SERIES  500 


Plots  501  to  505 


Plots  506  to  510 


Plots  511  to  515 


Plot 
No. 

Soil 
treatment   Corn 

Plot 
No. 

Soil 
treatment    Corn 

Plot 
No. 

Soil 
treatment  Corn 

1 
2 
3 
4 
5 

0  

.  .  71.8 

6 
7 
8 
9 
10 

R.  .. 

.  77  3 

11 
12 
13 
14 
15 

LeM.. 
LeML.  .  . 
LeMLrP. 
LeMrP  .  . 
0  .  . 

62.5 
67.1 
67.1 
65.2 
56.2 

M  

.  .  67  7 

RL.      . 

73  8 

ML  

.  .  78  2 

RLrP 

.  80  3 

MLrP.  .  . 
0  .. 

.  .  76.3 
.  71.1 

RLrPK.  . 
0  .. 

.   78.5 
.  66.5 

354 


BULLETIN  No.  305 


[April, 


TABLE  21.— JOLIET  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Corn 

Series 
200 
Alfalfa1 

Series 
300 
Corn 

Series 
400 
Wheat 

Series 
500 
Clover- 
alfalfa 

Series 
600 

1 

0  .  . 

.     33.0 

(   .53) 

20.4 

29.1 

(1.00) 

63.0 

2 

M  

.     47.2 

(   .69) 

41.5 

33.2 

(1.13) 

69.1 

3 

ML  

.     54.4 

(   .96) 

55.0 

33.8 

(1.40) 

72.7 

4 

MLrP  

.     51.4 

(2.01) 

53.5 

38.1 

(2.36) 

70.8 

5 

0  

32.4 

(   -70) 

18.9 

29.2 

(1.15) 

62.3 

6 

R  

.     30.4 

(   .74) 

20.2 

33.0 

(   .92) 

62.3 

7 

RL  

.     32.2 

(   .99) 

34.7 

32.6 

(   .78) 

68  4 

8 

RLrP  

.     37.8 

(1.98) 

46.6 

40  5 

(1  82) 

81.1 

9 

RLrPK  

47.4 

(2.19) 

50  2 

42  8 

(2  00) 

84  5 

10 

0  

.     34.8 

(   .50) 

13.8 

30.2 

(   .83) 

59.2 

1Leaf  hopper  injured  the  alfalfa;  only  one  crop  was  harvested. 
TABLE  22.—  JOLIET  FIELD:     MINOR  SERIES 


Serial1 
plot 
No. 

Soil  treatment 

Series 
700 
Barley 

Series 
800 
Corn2 

Series 
900 
Legume  hay 

Series 
1000 
Wheat 

1 

L,  clover  

39.0 

14.3 

(   .99) 

22.5 

2 

LrP,  clover  

40.0 

18.6 

(1.46) 

31.5 

3 

LrP,  gypsum,  clover  

45.8 

20.1 

(1  60) 

32  2 

4 

L,  clover  

41  0 

16  9 

(1  38) 

28  3 

5 

L,  alfalfa  

37.9 

21.3 

(0.00) 

27.5 

6 

LrP,  alfalfa  

42  3 

21  0 

(0  00) 

32  0 

7 

LrPL  (8000),  alfalfa  

42  7 

21  0 

(0  00) 

30  5 

8 

LrP,  KC1,  alfalfa  

45  2 

27  4 

(0  00) 

29  7 

9 

L,  KC1,  alfalfa  

33.5 

26.2 

(0.00) 

24.5 

10 

L,  alfalfa  

34.4 

27.1 

(0.00) 

26.0 

11 

L,  clover  

28.3 

(1.59) 

12 

LsP,  clover  

36.9 

(1.68) 

13 

LrP,  clover  

41  5 

(1  86) 

Note. — In  1924  the  rotation  on  the  minor  series  at  Joliet  was  changed  to  corn, 
barley,  wheat,  and  biennial  legumes  (red  clover  on  Plots  1  to  4  on  all  series  and  on 
Plots  11,  12,  and  13  on  Series  700  and  900,  alfalfa  on  Plots  5  to  10).  All  plots  had 
received  limestone  at  the  rate  of  5,000  pounds  an  acre  prior  to  1924.  At  that  time 
Plot  7  on  all  series  received  8,000  pounds  of  limestone  an  acre.  Fertilizers  as  desig- 
nated in  Table  22  are  applied  at  the  following  annual  acre  rates:  rock  phosphate 
400  pounds,  potassium  chloride  100  pounds,  gypsum  100  pounds.  These  fertilizers 
are  applied  twice  in  the  rotation,  ahead  of  the  wheat  and  corn  crops.  Superphos- 
phate is  applied  for  the  wheat  crop  at  the  rate  of  250  pounds  an  acre. 

^lots  11,  12,  and  13  appear  only  on  Series  700  and  900. 

2Owing  to  corn-borer  investigations,  the  corn  was  not  planted  until  June  10. 


1928] 


CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1927 


355 


TABLE  23.— KEWANEE  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Series 
Soil  treatment                           100 
Corn 

Series        Series 
200            300 
Wheat       Clover 

Series 
400 
Oats 

1 

0.. 

39.0 

28.2         (1.61) 

65  8 

2 

M  

66.6 

38.3         (2.33) 

78  8 

3 

ML.  .  . 

67.4 

35.5         (2  64) 

81  7 

4 

MLrP. 

73.4 

41.2         (3  56) 

81  7 

5 

0..  . 

41.2 

34  8         (2  11) 

70  9 

6 

R  

44  8 

34  9         (1  17) 

70  5 

7 

RL  

53.4 

37.1         (1.29) 

70.8 

8 

RLrP.  . 

63.6 

43.9         (1.79) 

74.8 

9 

RLrPK 

68.8 

46.2         (1.66) 

78.3 

10 

0  

37.2 

:'7.0         (0.00) 

57.8 

TABLE  24.—  KEWANEE  FIELD: 

MINOR  SERIES 

Serial 
plot 
No. 

Series 
Soil  treatment                             500 
Corn 

Series        Series 
600            700 
Wheat       Clover 

Series 
800 
Oats 

1 

RrP.  . 

58.3 

45.6         (3.71) 

80.6 

2 

RsP.  .. 

59  .  1 

46  4         (3.69) 

82.2 

3 

RLrP.  . 

56.0 

41.7         (3.51) 

81.1 

4 

RLsP.  . 

56.5 

46.2         (3.47) 

84.7 

TABLE  25.—  LaMOILLE  FIELD: 

MAIN  SERIES 

Serial 
plot 
No. 

Series 
Soil  treatment                             100 
Corn 

Series        Series 
200            300 
Corn         Wheat 

Series 
400 
Oats 

1 

0.. 

44.6 

51.8          21.0 

60.0 

2 

M  

50.0 

56.4          27.8 

75.3 

3 

ML.  .  . 

.    .     59  4 

56  6          31  6 

76  9 

4 

MLrP  . 

56.4 

50.2          31.6 

72.3 

5 

0.. 

31.0 

25.6           17.9 

60.6 

6 

R  

41.2 

40.2          23.0 

66.9 

7 

RL  

44.8 

47.4          32.6 

74.5 

8 

RLrP  .  . 

49.8 

51.8          31.0 

73.9 

9 

RLrPK 

51.0 

49.2           28.4 

67.5 

10 

0.. 

34.0 

31.0          21.0 

60.8 

TABLE  26.—  LaMOILLE  FIELD: 

MINOR  SERIES 

Serial 
plot 
No. 

Series 
Soil  treatment                           500 
Corn 

Series          Series 
600              700 
Corn          Alsike 
clover 

Series 
800 
Wheat 

1 

0.  . 

33.2 

38.4         (3.32) 

21.5 

2 

M  

35.2 

37.9         (3.49) 

28.7 

3 

ML.  .  . 

33.8 

32.0         (3.05) 

31.2 

4 

MLrP. 

35.4 

27.2         (2.95) 

29.7 

356 


BULLETIN  No.  305 


[April, 


TABLE  27.— LEBANON  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Corn 

Series  200 

Series 
300 
Wheat 

Series 
400 
Soybeans 

Stubble 
Wheat         clover 

1 
2 
3 

4 

5 
6 

7 
8 

9 
10 

0.. 

26  8 

17.8 
22.9           
25.8           
24.2           

20.2 
18.2         (0.00) 
22.4         (1.44) 
22.4         (1.56) 

25.1         (1.48) 

18.7 

19.2 
26.7 
28.4 
29.2 

20.2 
24.3 
31.7 
32.4 

32.8 
25.8 

(1.52) 
(1.66) 
(1-61) 
(1.80) 

(1-40) 

(1-44) 
(1.56) 
(1.49) 

(1.29) 
(  -95) 

M  

.     26.6 

ML  

.     34.9 

MLrP  

.     35.0 

0.. 

.     17  3 

R  

.     22.9 

RL  

.     37.2 

RLrP  

.     43.0 

RLrPK  

.     49  4 

0  

.     32.7 

TABLE  28.—  LEBANON 

FIELD:     MINOR  SERIES 

Serial 
plot 
No. 

Soil  treatment 

Series  500 

Series 
600 
Corn 

Series 
700 
Oats 

Stubble 
Wheat       clover 

1-W 
1-E 

2-W 
2-E 

3-W 
3-E 

4-W 
4-E 

Le  

24.5         (    .91) 

38.4 
27.6 

50.6 
39.8 

58.8 
58.4 

60.6 
47.6 

45.9 
51.6 

44.4 
62.2 

47.8 
66.3 

54.7 
66.3 

LesP  

.  ..     30.2         (1.02) 

LeM.  . 

.  ..     26.0         (1.68) 

LeMsP  

.  .     34  5         (1  47) 

LeML  

29.5         (1.67) 

LeMsP  

...     36.3         (1.97) 

LeMLrP.  . 

.  .  .     26.5         (1  68) 

LeMLrP  

30  8         (1  72) 

(See  opposite  page  for  Tables  29  and  30.) 


TABLE  31.— MINONK  FIELD 


Serial 

Series 

Series 

Series 

300 

Series 

plot 
No. 

Soil  treatment 

100 
Corn 

200 
Corn 

< 

Wheat 

Stubble 
clover 

400 
Corn 

1 

0.. 

...     50.0 

51.2 

23.0 

57.2 

2 

M     

...     51.2 

55  2 

24  6 

67.7 

3 

ML   ... 

53  0 

57  4 

22  7 

62.8 

4 

MLrP  

...     45.2 

55.6 

23.4 

60.0 

5 

0.  . 

39.4 

48.0 

20.2 

55.8 

6 

R  

...     64.0 

53.4 

22.1 

(1.15) 

59.1 

7 

RL  

...     64  4 

51.2 

20.0 

(1.12) 

54.7 

8 

RLrP  

..     60.6 

59  6 

20.8 

(1.30) 

50.8 

9 

RLrPK  

..     57  8 

59.8 

22  5 

(1.40) 

49.4 

10 

0  

36  2 

40  8 

20  9 

48.1 

1928} 


CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1927 


357 


TABLE  29.— LEBANON  FIELD:     MINOR  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
800 
Potatoes 

Series 
900 
Wheat 

1 

LeM  

9.3 

35  7 

2 

LesP  (200). 

23.0 

34  3 

3 

LerP  (400). 

22.3 

36.7 

4 

LesP  (200), 

kainit  (200)  

24.0 

38.0 

5 

LerP  (400). 

kainit  (200).. 

16.0 

36.0 

6  Le,  straw 53.3  34.3 

7  Le,  straw,  sP  (200) 100 .0  37 .3 

8  Le,  straw,  rP  (400) 87 .0  37 .0 

9  Le,  treble  superphosphate  (100) 29 .0  34 .3 

10        Le,  potassium  phosphate  (200) 26 .3  29 .7 

Note. — In  1925  Series  800  and  900  were  laid  out  on  land  which  had  received 
8,000  pounds  of  limestone,  2,000  pounds  of  rock  phosphate,  and  15  tons  of  manure 
an  acre  in  1911.  The  land  grew  alfalfa  almost  continuously  from  1911  to  1925.  A 
rotation  of  wheat  (sweet-clover  catch  crop)  and  potatoes  is  planned.  Fertilizers 
are  applied  as  indicated  in  Table  29.  The  phosphates  are  supplied  annually,  rock 
phosphate  400  pounds,  superphosphate  200  pounds,  treble  superphosphate  100 
pounds  and  potassium  phosphate  200  pounds  an  acre.  Kainit  200  pounds  an  acre 
is  applied  for  each  potato  crop.  Two  tons  of  manure  an  acre  is  applied  for  potatoes. 
Straw  is  applied  as  a  mulch  when  the  potatoes  are  coming  thru  the  ground. 


Serial 
plot 
No. 


TABLE  30.— McNABB  FIELD 


Soil  treatment 


Series 

100 
Clover 


Series 

200 

Wheat 


Series        Series 
300  400 

Oats          Corn 


1  R (2.20)  32.2  54.4  63.8 

2  RrP (2.49)  31.0  61.3  74.2 

3  0 (3.17)  25.8  62.8  66.2 

4  MrP (2.95)  30.8  66.3  75.6 

5  M (3.09)  28.8  68.1  78.2 


TABLE  32.— MT.  MORRIS  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Corn 

Series 
200 
Wheat 

Series 
300 
Clover 

Series 
400 
Oats 

1 

0.. 

32.0 

16.9 

(1.77) 

49.7 

2 

M  

51.6 

19.3 

(2.63) 

62.7 

3 

ML  

60.5 

24.2 

(2.76) 

70.9 

4 

MLrP  

56.0 

25.1 

(2.62) 

71.9 

5 

0.. 

33.6 

16.7 

(2.01) 

44.5 

6 

R  

44.0 

21.3 

(    .96) 

46.3 

7 

RL  

63.0 

24.0 

(1.69) 

59.5 

8 

RLrP  

64.1 

23.0 

(1.97) 

64.2 

9 

RLrPK  

62.1 

23.8 

(2.21) 

66.7 

10 

0  

33.2 

16.2 

(1.60) 

43.6 

358 


BULLETIN  No.  305 


[April, 


TABLE  33.— MT.  MORRIS  FIELD:     MINOR  SERIES 


Serial 

Series 

Series 

Series 

Series 

plot 

Soil  treatment 

500 

600 

700 

800 

No. 

Oat  hay1 

Corn 

Mixed  hay 

Barley 

1 

0..  , 

.    (1.45) 

44  6 

(2  63) 

50  2 

2 

M  

(1.46) 

52.4 

(3.05) 

57.9 

3 

ML  

(2.00) 

68.8 

(3  04) 

66  9 

4 

MLrP  

(3.00) 

72.0 

(2.96) 

71  7 

'Nurse  crop  for  alfalfa. 


TABLE  34.— NEWTON  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Mixed  hay 

Series  200 

Series 
300 
Oats 

Series 
400 
Corn 

Wheat 

Stubble 
hay 

1 

2 
3 

4 

5 
6 

7 
8 

9 
10 

0.. 

.    (1.47) 

.8 
1.5 
23.8 
25.2 

1.8 
3.2 
17.2 
18.8 

26.5 
.7 

(0.00) 
(0.00) 
(    -30) 
(   .85) 

(0.00) 
(0.00) 

(    -32) 
(   -68) 

(    .95) 
(0.00) 

3.1 
4.1 
3.1 
3.8 

1.9 
2.2 
2.2 
3.4 

3.8 
1.3 

4.7 
18.4 
42.5 
37.2 

7.5 
8.6 
23.0 
22.2 

41.6 
13.1 

M  

(1.70) 

ML  

(1.87) 

MLrP  

....    (1.95) 

0  

.    (1.30) 

R  

.  .   (1  50) 

RL  

....    (1.73) 

RLrP  

(1.98) 

RLrPK  

.    (2.12) 

0  

....    (1.51) 

1928]        CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1927 


359 


- 

N        OOOCN  CO-* 

0 

•*<N  COOO  N       CN 

-8-3 

c  c 

3  3 
0   0 

1 

f)      00 

•2  .go  g 

O        CO  O  O  O  O 

O        t^OOOi-KN 
OO        COI>  COI>  «C 

CO 
CO 

00 

i-H  OO  COCO  t~-        t^ 
^^  ^^  ^^  ^*  ^*        CO 

OCOt^-OC  00        CN 

D.  O. 

II 

•^  03 

<NCO 

•s  Sg| 

g  02     p: 

§ 

•gg  |  ^ 

Ci        W  OCN  OO  CO 

8t^l^  00  U500 
O^H  (M  CO<N 

«O        1-HO5CNCOIM 
(Ni-i(N  (N(N 

O        OC  OC  OC  C<«t^ 
O        COCO  (N  (M  I-H 

co 

001^00  OO5        t^ 
(N  (N  (NCOCN 

t^OO  OCOCO        O 
i—  1  1—  i  i—  i  ^^  i—  i       O 

S  g 

o  "E."O 

GO             g 

O 
CO       OOINCOIN 

0 
00        CONOOIN'* 

o 

00 

0 

OOCO<N  <NCO     oo 

|ll 

«osr9 

05       W 
o 

fl 

CO        COCOCOCOCO 

O5        CO-*  COO  »C 

co 

CO 

00 

O  CO  M  •*  t^       O 
coeooocN      oo 

III 

°  ro^^ 

•—  »    flj  1s*  rf^ 

1  co     ^ 
[M 

W                    Frt 

& 

00          -4-5    CO 

O        COr-i  TJ<  CO  CO 

8^.00  OC  O  O 
OOO»H  l-H 

O5        ^^  ^*  ^5  I~H  O» 

SOOCOI^t^ 
I-H  i—  i  O  O  O 

0 
1—  1 

cooiio-^eo      c» 

CO  CO  CO  CO  CO 
t^O  COtNl-        O 

3  g  3 

O   D<  co 

-  ~    — 

GO.  a 

CO^M  | 

o 

0 

o 

o 

cr  o^ 

O  "*^   s 

CO  ^*    ^j 

1""  i 

CO   ^    ^^ 

o  o  ° 

lll.s 

Co  G'  C     . 

fs||^ 

GO  G  G     . 
O   o   O   O  "jg 

i—  i  toFQ 

If* 

CO  O    ^ 

Ci^  f*)    ?: 

S    --o 

c3  ^^   ^ 

c 

(-1  *"^  3 

1 

•~  o  o 

•8 

"3  "^  & 
.2oo  o 

E  ^o 

-J3 

.£s  -*-*  o 

£PH»^ 

02 

CO    O"O 

g  -^'G 

lii 

_____ 

MUUUMU 
HH  HH  l-H  f*4  (-H 

PH       —  —  —  —  — 

----- 

t—  (  1—  1  I—  1 

M 

1 

CO 

1-1 

----- 

HN  H  H  *i        - 

1—  1  l-H  1—  1  1—  1  1—  1           1—  1 

S        fi 

§8 

caco" 

360  BULLETIN  No.  305  [April, 

TABLE  36.—  OBLONG  FIELD:     MAIN  SERIES 

Serial  Series        Series        Series        Series 

plot  Soil  treatment  100  200  300  400 

No.  Corn        Wheat   Mixed  hay     Oats1 

SOUTH  HALF 

1  0  ................................  25.6  10.3  (1.06) 

2  M  ...............................  39.8  10.5  (.81)         ____ 

3  ML  .............................  37.4  14.7  (2.38) 

4  MLrP  ...........................  36.8  18.5  (2.72)         ____ 

5  0..  19.4  8.5  (    .72) 

6  R  ...............................  20.2  14.0  (.82) 

7  RL  ..............................  11.6  16.5  (2.16) 

8  RLrP  ............................  18.8  18.0  (2.51)         ____ 

9  RLrPK  ....................  35.6          23.0         (2.86) 

10        0  ................................      14.2  11.8         (.98) 

_  _  NORTH  HALF  _ 

1  RLsP.  ...  29.8  12.3  (1.54) 

2  MLrP  ...........................  46.0  11.7  (.97) 

3  MLbP  ...........................  54.0  12.5  (2.22) 

4  MLrP  ...........................  46.0  13.3  (2.48) 

5  RL,  underacidulated  P  .............  19  .2  11.3  (1  .22) 

6  RLrP  ............................  32.6  15.5  (1.34)         ____ 

7  RLbP  ...................  ........  16.6  20.0  (2.66) 

8  RLrP  ............................  21.6  17.2  (2.64) 

9  RLrPK  ..........................     32.4          21.5         (2.82) 

10        RL,  potassium  P  ..................     31.8  12.5         (1.96)         ____ 

Note.  —  In  1925  these  series  were  divided  into  north  and  south  halves  for  the 
purpose  of  studying  the  relative  values  of  different  phosphorus  carriers.  The  plots 
on  the  south  halves  of  all  series,  as  well  as  Plots  4,  8,  and  9  on  the  north  halves, 
continue  under  the  original  soil  treatment. 

On  the  north  halves  the  new  soil  treatment  is  as  follows:  An  initial  application 
of  4,000  pounds  of  limestone  an  acre  to  Plots  1,  2,  5,  6,  and  10;  subsequent  applica- 
tions to  be  governed  by  the  clover  requirements.  Rock  phosphate  to  Plots  2  and  6j 
1,000  pounds  an  acre  ahead  of  wheat  and  600  pounds  ahead  of  corn.  Bone  meal 
to  Plots  3  and  7;  500  pounds  an  acre  ahead  of  wheat  and  300  pounds  ahead  of  corn. 
Superphosphate  to  Plot  1;  underacidulated  phosphate  to  Plot  5,  and  potassium 
phosphate  to  Plot  10  ',  all  in  the  same  amounts  and  applied  for  the  same  crop  as  the 
bone  meal.  Residues  to  be  turned  under  on  Plots  1,  5,  and  10  as  on  the  original 
residue  plots. 

failure  due  to  late  seeding. 

TABLE  37.—  OBLONG  FIELD:    LIME  EXPERIMENT1 


%-inch  Vv  to  Vio-inch  Xo-inch  }£o-inch 

Kind  of  lime             mesh               mesh  mesh           mesh  Burnt  lime 

material                Sweet              Sweet  Sweet  Sweet  Sweet 

clover              clover  clover  clover  clover 

High  calcium..          .    (1.52)  (1.20)  (1.52)         (1.72)  (1.48) 

Dolomitic  ..........    (1.56)  (.68)  (1.60)          (1.68)  (1.68)_ 

xThis  experiment  is  similar  to  the  Newton  lime  experiment  except  that  the 
lime  materials  are  applied  at  a  uniform  rate  (9,000  pounds  calcium  carbonate  equiva- 
lent per  acre)  and  no  materials  except  lime  are  applied.  Each  yield  is  the  average 
of  duplicate  plots. 


1928} 


CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1927 


361 


TABLE  38.— ODIN  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Soybeans 

Series 
200 
Wheat     ! 

Series 
300 
Sweet  clover 

Series 
400 
Corn 

1 

0.. 

8.0 

3  4 

0  00 

15  0 

2 

R  

92 

5  1 

0  00 

19  9 

3 

RL  

12.8 

16.3 

.59 

33  7 

4 

RLbP  

.  .    .      .         13  8 

22  3 

41 

31  8 

5 

RLbPK  

26.5 

19.8 

1  28 

43  5 

6 

0.. 

8.1 

2.1 

0  00 

12  6 

7 

R  

14.0 

3.5 

0  00 

20  9 

8 

RL  

19.2 

18  9 

56 

27  5 

9 

RLbP  

20.3 

21  0 

38 

33  5 

10 

RLbPK  

28  8 

22  5 

1  56 

38  8 

TABLE  39. — ODIN  FIELD:    LIME-PHOSPHORUS  EXPERIMENT 


Light  lime 

Heavy  lime 

Serial 
plot 
No. 

Soil  treatment 

Series 
500 
Wheat 

Series 
600 
Soybeans1 

Series 
700 
Wheat 

Series 
800 
Soybeans1 

1 
2 
3 

4 
5 
6 

LeLbPK.. 

17.5 

11.7 
9.7 
11.2 

10.8 
9.2 
10.8 

13.3 
16.3 
13.8 

16.0 
15.8 
13.2 

14.0] 
11.7] 
11.0 
j 
10.5 
12.5 
10.2 

LeLK  

11.8 

LeLsPK  

15  3 

LeLrPK.  . 

14  2 

LeLK  

9.2 

LeL,  slag  P,  K  

15.8 

Soybeans  substituted  for  corn  in  1927  as  a  means  of  chinch-bug  control. 
TABLE  40. — ODIN  FIELD:     SWEET-CLOVER  ROTATION  EXPERIMENT 


Rotation 

Soil 
treatment 

Corn 

Soybeans 

Wheat 

Sweet 
clover 

3-year  sweet-clover  rotation  .  . 

.  RLbP 

26.0 

14.4 

6.1 

4-year  sweet-clover  rotation  .  . 

...  RLbP 

38.3 

17.8 

15.0 

1.30 

TABLE  41.— OQUAWKA  FIELD 


Serial                                  Series 
plot      Soil  treatment         100 
No.                                     Rye 

Series        Series 
200            300 
Alfalfa    Soybeans 

Series 
400 
Corn 

Series 
500 
Wheat 

Series 
600 
Sweet 
clover 

1 
2 
3 
4 

5 
6 

7 
8 

9 
10 

0  

8.7 

(   .60) 
(3.25) 
(3.54) 
(3.58) 

(3.00) 
(3.16) 
(3.34) 
(3.49) 

(3.35) 

(2.15) 

10.5 
12.2 
20.0 
17.9 

10.5 
9.7 
15.7 
15.0 

19.2 
8.1 

15.6 
26.4 
38.8 
38.0 

15.6 
18.8 
29.2 

28.8 

29.0 
13.0 

8.8 
11.3 
29.0 
27.9 

11.5 
16.7 
27.5 
28.0 

28.8 
14.0 

0.00 
0.00 
1.50 
1.83 

0.00 
0.00 
1.58 
1.67 

1.83 
0.00 

M  

11.3 

ML  

13.3 

MLrP  

13.8 

0.  . 

8.8 

R  

9.4 

RL.  .. 

11.6 

RLrP  

11.8 

RLrPK  .  . 

11.0 

0  

6.4 

362 


BULLETIN  No.  305 


[April, 


TABLE  42.— PALESTINE  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Wheat 

Series 
200 
Corn 

Series 
300 
Alfalfa 
clover 

Series 
400 
Sweet 
clover 

Series  500 

Wheat 

Stubble 
hay 

1 
2 
3 

4 

5 
6 
7 
8 
9 
10 

LeL.  . 

16.2 

29.8 
35.2 
34.6 
34.4 

25.6 
30.6 
34.4 
37.6 
38.0 
30.8 

(1.65) 
(2.20) 
(2.02) 
(1.88) 

(1.37) 
(1-78) 
(2.17) 
(2.13) 
(2.49) 
(   -96) 

(1.02) 
(1-20) 
(1.52) 
(2.20) 

(1.70) 
(1.55) 
(2.00) 
(1.80) 
(2.18) 
(   .42) 

9.5 
11.7 
18.8 
20.0 

14.0 
16.7 
21.5 
21.2 
22.7 
12.2 

(.54) 
(.60) 
(.58) 
(-70) 

(.56) 
(.68) 
(-68) 
(.64) 
(.74) 
(-07) 

LeLM  

.     17.0 

LeLMsP  

.     18.3 

LeLMrP  

.     16.8 

LeL.  . 

.     14.2 

LeL,  KC1  

15.2 
.     17.3 

LeLsP,  KC1  

LeLrP,  KC1  

.     18.2 

LeLrP,  kainit.  .  . 
0  

.     17.2 
9.5 

Note. — In  1926  the  rotation  was  changed  to  wheat  (Hubam  and  alsike  clover 
catch  crop),  wheat  (sweet-clover  catch  crop),  corn,  soybeans,  alfalfa.  An  initial 
application  of  limestone  was  made  to  Plots  1,  2,  5,  and  6,  at  the  rate  of  8,000  pounds 
an  acre;  subsequent  applications  to  be  governed  by  the  requirement  of  the  legume 
crops.  KC1  is  applied  at  the  rate  of  250  pounds  an  acre  for  the  corn  crop;  kainit, 
at  the  rate  of  1,000  pounds  an  acre  ahead  of  the  second  wheat  crop;  superphosphate, 
at  the  rate  of  300  pounds  an  acre  for  each  wheat  crop  and  150  pounds  for  the  corn 
crop.  Pu)ck  phosphate  is  applied  at  the  rate  of  600  pounds  an  acre  for  each  wheat 
crop  and  300  pounds  for  the  corn  crop.  Plots  2,  3,  and  4  receive  manure  in  amounts 
equivalent  to  the  crops  removed  from  Plot  2  of  all  series,  applied  for  corn. 


TABLE  43.— PALESTINE  FIELD:     MINOR  SERIES 


Soil  treatment 

Series 
600 
Alfalfa 

Series 
700 
Wheat 

Series 
800 
Corn 

LeLsP.. 

(1.28) 

18.7 

9.9 

LeLrP  

(1.28) 

11.7 

10.2 

LeL  

(1.04) 

12.8 

11.5 

LeL,  flowers  of  sulfur  

(1.12) 

9.6 

17.5 

LeLrP,  flowers  of  sulfur  

(   .96) 

9.1 

14.2 

LeL  

(1.12) 

5.3 

13.2 

LeL,  gypsum  .  . 

(   .96) 

11.2 

19.1 

LeLrP,  gypsum  .  . 

(   .96) 

8.5 

13.7 

Note. — These  series  were  laid  out  in  the  fall  of  1925.  A  rotation  of  wheat 
(sweet  clover),  corn,  and  alfalfa  will  be  grown,  wheat  and  corn  alternating  on  two 
series  for  three  years,  while  alfalfa  occupies  the  third  series  for  the  same  period. 
The  following  plan  of  soil  treatment  was  adopted:  An  initial  application  of  6,000 
pounds  of  limestone  an  acre,  future  applications  to  be  governed  by  the  crop  needs. 
Rock  phosphate,  600  pounds  an  acre  for  wheat,  300  pounds  for  corn,  and  600  pounds 
for  the  second  crop  of  alfalfa.  Superphosphate,  300  pounds  an  acre  for  wheat, 
150  pounds  for  corn,  and  300  pounds  for  the  second  crop  of  alfalfa.  Flowers  of 
sulfur,  50  pounds  an  acre  for  wheat  and  50  pounds  for  the  second  crop  of  alfalfa. 
Gypsum,  300  pounds  an  acre  for  wheat  and  300  pounds  for  the  second  crop  of  alfalfa. 


1928]        CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1927 


363 


TABLE  44.— RALEIGH  FIELD 


Serial 
plot 
No. 


Soil  treatment 


Series  Series 

100  200 

Corn  Wheat 


Series          Series 

300  400 

Soybeans1   Soybeans 2 


WEST  HALF 


1  0 11.2  4.3  (    .96)  1.3 

2  M 35.6  6.2  (1.08)  6.3 

3  ML 63.0  19.3  (1.68)  18.8 

4  MLrP 68.2  19.5  (1.84)  18.3 

50..  22.0  3.3  (    .69)  2.2 

6  R 25.6  5.0  (.60)  3.3 

7  RL 44.4  12.2  (1.60)  10.2 

8  RLrP 49.8  13.7  (1.70)  11.7 

9  RLrPK..  61.6  21.8  (1.52)  20.3 
10        0 14.6                5.0             (1.79)  3.7 

EAST  HALF 

1  RL.  .  15.0  5.3  (1.13)  8.2 

2  MrP 39.6  17.3  (1.18)  9.5 

3  MLbP 66.4  24.8  (2.06)  21.3 

4  MLrP 68.0  24.5  (1.64)  19.0 

5  RsP..  13.8  17.0  (1.15)  7.5 

6  RrP 20.4  18.5  (1.50)  9.3 

7  RLsP 54.0  24.5  (1.60)  10.0 

8  RLrP 47.2  19.3  (1.44)  10.7 

9  RLrPK,  gypsum 60.8  25.3  (1.69)  19.0 

10        RLrP 30.6  15.7  (1.60)  7.8 

Note. — In  1924  the  plots  on  these  series  were  divided  into  west  and  east  halves 
and  additional  investigations  were  begun.  The  plots  on  the  west  halves  of  all  series 
continue  under  the  original  soil  treatment,  but  the  plots  on  the  east  halves  receive 
the  treatment  indicated  above. 

No  more  rock  phosphate  will  be  applied  to  the  phosphate  plots  on  the  west 
halves  for  an  indefinite  period,  these  plots  having  received  a  total  of  8,500  pounds 
an  acre.  The  same  holds  true  for  the  east  half  of  Plot  9  of  all  series. 

On  the  east  halves  the  phosphatic  fertilizers  and  gypsum  are  applied  twice  in 
the  rotation,  one-half  the  rotation  quota  ahead  of  wheat  and  one-half  ahead  of  corn 
at  the  following  annual  acre  rates:  rock  phosphate  500  pounds,  superphosphate 
200  pounds,  bone  meal  200  pounds,  gypsum  200  pounds. 

The  minimum  amount  of  limestone  necessary  to  the  successful  growth  of  clovers 
will  be  applied  to  Plots  1-E  and  10-E  of  all  series,  4,000  pounds  an  acre  having  been 
applied  in  1924. 

'Substitute  for  clover.     Substitute  for  oats. 


364 


BULLETIN  No.  305 


[April, 


TABLE  45.— SIDELL  FIELD 


Serial 
plot             Soil  treatment 
No. 

Series        Series        Series        Series 
100            200            300            400 
Wheat      Alfalfa       Clover        Oats 

Series 
500 
Corn 

1        0.  .  . 

31  2         (1  36)        (3  11)         48  4 

61.0 
71.2 
79.8 
77.4 

47.4 
53.6 
62.2 
68.6 

76.4 
41.8 

2         M  

27  1         (1  46)        (3  47)         52  3 

3        ML  

30.7         (1.96)       (3.63)        51.9 

4        MLrP  

34  3         (2  46)        (3  89)         55  5 

5        0  

25.2         (1.50)       (2.62)        43.8 

6        R  

24.7         (1.45)        (2.64)         40.6 

7        RL  

30.7         (2.05)        (2.84)         46.9 

8        RLrP  

36.6         (2.25)       (3.56)        46.1 

9        RLrPK.  . 

37.5         (2.81)       (3  46)        45.3 

10        0  

28.9         (1.82)        (2.58)         35.9 

TABLE  46.—  SPARTA  FIELD:     MAIN  SERIES 

Serial 
plot              Soil  treatment 
No. 

Series            Series            Series 
100                200                300 
Sweet  clover      Wheat        Soybeans 

Series 
400 
Corn 

1        0.. 

0.00                2.3                2.0 

4.2 
12.2 
30.2 
33.8 

10.4 
11.2 
29.2 
28.0 

35.6 
7.2 

2        M  

0.00               4.8                3.0 

3        ML  

3.17                9.8              10.5 

4        MLrP  

3.33              11.3              11.7 

5        0.  .  , 

0  00                2.2                  .2 

6        R  

0  00                2.7                2.0 

7        RL  

3  50                92              11.0 

8        RLrP  

2.83                9.3                8.3 

9        RLrPK.  . 

4.33              10.0              11.3 

10        0  

0.00                1.2                  .7 

TABLE  47.—  SPARTA  FIELD:     MINOR  SERIES 

Serial 
plot            Soil  treatment 
No. 

Series        Series             Series  700 
500            600                Cowpeas 
Wheat        Corn          Seed         Straw 

Series 
800 
Timothy 

1        Le.  . 

4.2             19.0            6.5         (   .50) 

(.02) 
(-04) 
(-32) 
(-49) 
(.58) 
(-09) 

2        LeM  

...     6.8            22.2            9.8         (   .70) 

3        LeML  

...     6.5            23.2           10.3         (1.04) 

4        LeMLrP  

...     38            23.8            8.5         (1.04) 

5        LeMLrPK  

.  .     4.2            26.2            7.0         (   .94) 

6        Le  

...     1.0             14.8            2.7         (   .32) 

1928] 


CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1927 


365 


TABLE  48.— SPARTA  FIELD:     MINOK  SERIES 


Soil  treatment 

Plot  A       Plot  B 

Plot  C       Plot  D 

PlotE 

PlotF 

Sweet 
Corn         clover 

Alfalfa 
seeding      Alfalfa 

Wheat 
varie- 
ties 

Oats 
varieties 
hay 

MLrPK.  . 

.     37.8         (.50) 

(1.79) 
....         weeds 

i4.5 

(i'.ei) 

MrPK  

18  .  4        weeds 

LeL  

TABLE 

49.—  SPRING  VALLEY:     MAIN  SERIES 

Serial                                                   Series 
plot             Soil  treatment                    100 
No.                                                        Corn 

Series  200 
Stubble 
Wheat       clover 

Series 
300 
Clover 

Series 
400 
Oats 

1        0.. 

17.4 

26.5 
36.2 
36.0 
40.1           

34.2 
38.2         (.32) 
40.1         (.53) 
41.2         (.58) 

44.3         (.96) 
29.2           

(2.46) 
(3.09) 

(2.70) 
(2.78) 

(2.67) 
(2.28) 
(2.29) 
(2.28) 

(2.37) 
(2.50) 

31.6 
48.4 
40.9 
59.7 

42.8 
36.6 
42.5 
41.1 

46.3 
42.5 

2        M  

37.8 

3        ML  

48.4 

4        MLrP  

50.8 

5        0.. 

...     23.0 

6        R  

26.6 

7        RL  

27.2 

8        RLrP  

24.8 

9        RLrPK  

41.8 

10        0.  .      . 

25  0 

TALBE 

50.—  SPRING  VALLEY:     MINOR  SERIES 

Serial 
plot                      Soil  treatment 
No. 

Series        Series 
500            600 
Corn1       Alfalfa 

Series 
700 
Oats 

Series 
800 
Corn 

1        0.. 

12  4         (   .94) 

30.3 
40.0 
40.9 
32.5 

39.8 
41.4 
57.2 
53.4 

2        RM  

.     26  8         (     92) 

3        RML 

.     28  0         (1  63) 

4        RMLrP  

.     29.6         (1.09) 

damaged  by  repeated  flooding  in  the  spring. 


366  BULLETIN  No.  305  [April, 


TABLE  51.—  TOLEDO  FIELD 

Serial 
plot 
No. 

Series 
Soil  treatment                            100 
Corn 

Series        Series 
200            300 
Wheat   Mixed  hay 

Series 
400 
Oats 

SOUTH  HALF 

1 
2 
3 
4 

5 
6 

7 
8 

9 
10 

0  

13.0 

15.2 

17.8 
29.7 
29.7 

14.3 
17.3 
29.2 
31.7 

36.5 
19.8 

(0.00) 
(   -30) 
(1.95) 
(2.04) 

(0.00) 
(0.00) 
(2.13) 
(1.96) 

(2.69) 
(0.00) 

3.4 
4.1 
2.5 
3.8 

6.3 
5.6 
4.7 
5.0 

5.3 
2.2 

LeM  

18.2 

LeML  

39.4 

LeMLrP  

34.6 

0.. 

10.6 

R  

9.6 

RL  

19  0 

RLrP  

18.0 

RLrPK  

31.0 

0  

5.6 

NORTH  HALF 

1 
2 
3 
4 

5 
6 

7 
8 

9 
10 

RL  

25  2 

22.8 
26.3 
30.2 
31.2 

21.5 
27.0 
30.5 
31.8 

34.7 
31.2 

(   -96) 
(   -93) 
(2.84) 
(2.43) 

(0.00) 
(0.00) 
(2.47) 
(2.62) 

(3.68) 
(1.49) 

3.4 
3.1 
4.1 

4.4 

2.2 
3.1 

7.2 
7.2 

6.3 
5.9 

LeMrP  

18  8 

LeMLbP  

41.8 

LeMLrP  

46.6 

RsP.  . 

11.4 

RrP  

17  2 

RLsP  

20  6 

RLrP  

18.0 

RLrPK,  gypsum  

33.2 

RLrP  

13.2 

Note. — In  1924  the  plots  on  these  series  were  divided  into  north  and  south 
halves  and  additional  studies  were  begun.  The  plots  on  the  south  halves  of  the 
series  continue  under  the  original  soil  treatment  but  the  plots  on  the  north  halves 
receive  the  soil  treatment  designated  above.  No  more  rock  phosphate  will  be 
applied  to  the  phosphate  plots  on  the  south  halves  for  an  indefinite  period,  these 
plots  having  received  a  total  of  8,000  pounds.  The  same  holds  true  of  the  north 
half  of  Plot  9  of  all  series.  Both  halves  of  Plots  2,  3,  and  4  will  receive  the  sweet- 
clover  catch  crop  in  the  same  manner  as  the  residue  plots. 

On  the  north  halves  the  phosphatic  fertilizers  and  gypsum  are  applied  twice 
in  the  rotation,  one-half  of  the  rotation  quota  ahead  of  corn  and  one-half  ahead  of 
wheat  at  the  following  annual  acre  rates:  rock  phosphate  500  pounds,  superphos- 
phate 200  pounds,  bone  meal  200  pounds,  gypsum  200  pounds. 

The  minimum  amount  of  limestone  necessary  to  the  successful  growth  of  clovers 
will  be  applied  to  Plot  1-N  and  10-N,  4,000  pounds  having  been  applied  in  1924. 


1928]        CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1927 


367 


TABLE  52.— UNION VILLE  FIELD:     MAIN  SERIES 


Serial 

S'ot 
o. 


Soil  treatment 


Series        Series        Series        Series 

100  200  300  400 

Corn        Wheat    Soybeans    Cotton1 


WEST  HALF 


1  0 17.2  1.3  (   .89) 

2  M 20.0  2.8  (1.08)  

3  ML 34.4  10.3  (1.89)  

4  MLrP 33.4  12.5  (1.92)  

5  0....  13.0  2.3  (   .71) 

6  R 15.2  1.8  (.57) 

7  RL 24.4  6.8  (1.62) 

8  RLrP 27.2  11.5  (1.74) 

9  RLrPK 34.8          14.8         (2.06) 

10        0 11.8  2.5         (.73)         

EAST  HALF 

1  L 12.8  ~8  (1.27) 

2  MLrP 23.8  4.0  (1.64) 

3  ML,  KC1 32.0  10.8  (1.83)         

4  MLrP,  KC1 33.4  13.3  (1.98) 

5  LsP 15.0  4.2  (1.06) 

6  L,  NaNO3 15.4  2.0  (1.10)         

7  RLsP,  KC1 29.4  10.7  (1.75)         

8  RLrP,  KC1 31.8  11.8  (1.78) 

9  RLrP,  kainit 30.8  14.3         (1.87) 

10        LsP,  NaNO3 18.6  9.5         (1.21)         

Note. — In  1925  these  series  were  divided  into  west  and  east  halves  and  new 
investigations  were  begun.  All  plots  on  the  west  halves  and  Plot  9  on  the  east 
halves  of  all  series  will  continue  under  the  original  soil  treatment;  but  the  plots  on 
the  east  halves,  with  the  exception  of  Plot  9,  receive  the  treatment  indicated  above. 
No  more  rock  phosphate  will  be  applied  to  any  of  the  original  phosphate  plots  for 
an  indefinite  period,  these  plots  having  received  a  total  of  8,0.00  pounds  an  acre. 

The  soil  treatment  on  the  east  halves  is  as1  follows:  Limestone  to  Plots  1,  2,  5,  6, 
10  at  the  rate  of  4,000  pounds  an  acre;  subsequent  applications  to  be  governed  by 
the  requirement  of  the  legume  crops.  Rock  phosphate  to  Plot  2;  400  pounds  an 
acre  for  wheat,  500  pounds  for  cotton,  and  300  pounds  for  corn.  Superphosphate, 
200  pounds  for  wheat,  250  pounds  for  cotton,  and  150  pounds  for  corn.  KC1,  150 
pounds  for  cotton  and  150  pounds  for  corn.  NaNO3,  200  pounds  for  cotton.  No 
more  residues  to  Plot  6. 

JCrop  failure. 


368 


BULLETIN  No.  305 


[April, 


TABLE  53— UNIONVILLE  FIELD:     MINOR  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series  500 
Cowpeas 
Seed         Straw 

Series        Series 
600            700 
Corn        Wheat 

Series 
800 
Timothy 

1 
2 
3 

4 
5 
6 

7 
8 

0.  . 

2.4 

(    -23) 
(1.58) 
(1.15) 

(1.61) 

(    -96) 
(1.15) 
(1.29) 
(    -56) 

19.4 
54.6 
46.6 

55.2 
52.7 
55.1 
53.6 
39.9 

3.0 
18.2 
10.4 

16.0 
13.9 
16.3 
15.6 
6.8 

(   -37) 
(2.49) 
(1-41) 

(1.50) 

(1.42) 
(1.38) 
(1.55) 
(   .70) 

MLrP  

14.0 

RLrP  

8.8 

RLrP,  kainit  

76 

RLrP,  shale  

5.6 

RLrP,  common  salt 
RLrP,  Omaha  K.  .  . 

6.8 

8.9 

0  

3.6 

TABLE  54.—  URBANA,  DAVENPORT  PLOTS 

Serial 
plot 
No. 

Soil  treatment 

Series 
100 
Clover 

Series 
200 
Corn 

Series 
300 

Oats 

Series 
400 
Alfalfa 

Series 
500 
Wheat 

WEST  HALF 

1 
2 
3 
4 
5 

6 
7 
8 
9 
10 

0  

(1.93) 

50.8 
54.0 
59.2 
64.0 
72.0 

82.4 
80.8 
78.8 
80.0 
83.6 

60.4 
62.2 
80.6 
73.5 
85.9 

89.4 
85.2 
86.1 
77.9 
80.7 

(   -19) 
(    -12) 
(   -13) 
(1.47) 
(2.54) 

(3.03) 
(3.54) 
(3.54) 
(3.79) 
(1.88) 

32.1 
31.7 
36.2 
32.5 
•    37.0 

46.5 
44.6 
43.3 
43.6 
45.1 

R  

(1.31) 

M  

(2.93) 

RL  

(1.86) 

ML  

(4.12) 

RLrP.  . 

.    (2.50) 

MLrP  

(5.09) 

RLrPK  

(2.38) 

MLrPK  

(4.77) 

LeMxSrPxS  

(3.25) 

EAST  HALF 

1 
2 
3 
4 
5 

6 

7 
8 
9 
10 

0  

(   .92) 

48.4 
51.6 
61.2 
67.2 
73.2 

73.2 
75.6 
76.4 
75.6 
66.8 

68.6 
63.2 

82.6 
78.4 
83.6 

91.9 
81.1 
89.9 

86.7 
85.0 

(   -ID 
(    .04) 
(    -14) 
(1.79) 
(2.38) 

(3.50) 
(3.51) 
(3.34) 
(3.65) 
(1.88) 

32.5 
30.9 
30.6 
30.4 
34.8 

44.9 
44.5 
42.9 
42.2 
43.0 

R  

(   .81) 

M  

(2.57) 

RL  

(1  58) 

ML  

(3.92) 

RLbP.  . 

(2.14) 

MLbP  

(5.02) 

RLbPK  

(2.43) 

MLbPK  

(4.76) 

LeMx5LrPx5  

(3.53) 

TABLE 

55.—  URBANA, 

MORROW  PLOTS 

Section 
of 
plot 

Soil  treatment 

Plot  3                  Plot  4 
(Continuous       (Corn  and  oats 
corn)                 rotation) 
Corn                     Corn 

Plot  5 
(Corn,  oats  and 
clover  rotation) 
Clover 

NW 

sw 

NE 
SE 

0  

22.0 

28.0 
74.4 
30.8 
77.2 

(3 
(1 
(3 

.59) 
.63) 
.04) 
.70) 

MLrP  

41.6 

0  

29  6 

MLbP  

40  4 

CROP  YIELDS  FROM  ILLINOIS  SOIL  EXPERIMENT  FIELDS  IN  1927 


369 


TABLE  56.— WEST  SALEM  FIELD:     MAIN  SERIES 


Serial 
plot 
No. 

Soil  treatment 

Series'      Series 
1002          200 
Soy- 
Oats       beans 

Series 
300 

Corn 

Series  4003 

Series 
5003 
Sweet 
clover 

Wheat 

Stubble 
clover 

1 
2 
3 
4 

5 
6 

7 
8 

9 
10 

0.. 

0.0 

12.2 

28.4 
37.2 
51.2 

5.6 
8.9 
15.7 
19.4 

40.8 
3.0 

2.6 
14.5 
22.9 

27.8 

10.3 
13.2 
16.6 
28.9 

33.1 

(0.00) 
(0.00) 
(  .55) 
(  -62) 

(0.00) 
(0.00) 

(  -47) 
(  -73) 

(1.05) 

0.00 
.92 
1.50 
.67 

.06 
.06 
1.08 
.59 

1.17 

ML1  

10.3 

ML  

16  0 

MLrP  

18.4 

If.. 

3.1 

RL1  

7.0 

RL  

10.2 

RLrP  

16  5 

RLrPK.  .  . 

21.2 

0  

0.0 

initial  application  of  lime  only.     2Crop  failure. 
Series  400  and  500. 


'There  are  only  9  plots  on 


TABLE  57.— WEST  SALEM  FIELD:    MINOR  PLOTS 


Soil 
treatment 

Plot  A 

PlotB 

PlotC 

PlotD 

Plot  E 

PlotF 

Mixed 
hay 

Wheat 

Stubble 
clover 

Sweet 
clover 

Mixed 
hay 

Wheat 

Stubble 
clover 

Corn 

MLrPK.  . 
MrPK.. 

..(1.89) 
.  .(    .33) 

19.1 
22.0 

(1.31) 
(0.00) 

1.08 
0.00 

(1.27) 
(    .26) 

23.9 
23.2 

(1.63) 
(0.00) 

11.0 
8.0 

UNIVERSITY  OF  ILLINOIS-URBANA 


